Frost plug

[GregH]

So commissioning the engjne today and it's not chugging out any water 8n the exhaust. I poke my head inside the companionway to see the engine and it's gurgling up water from the rear of the head.

Looks like lost a frost plug. From the photos below, can j just by new one and pop it in? Never dealt with these before. I forgot to measure it. Looks like 1-1/4" to me on my late model head?

[Dave Neptune]

Greg, there are freeze plugs of many sizes and some are in graduations of 1/64" so be careful.

Ken would get you the right one for sure. If someone knows the exact size or it is indeed an 1 1/4" it should be available in a good parts house.

Yes they can be driven in without to much trouble. Clean the hole but do no nick or remove much material as it is a press fit.

Dave Neptune

[ndutton]

It is a 1¼" plug but it is a Welch style as opposed to a cup style. The cup style goes into a smooth bore hole whereas the Welch fits into a bore with a step. The plug bottoms out on the step.

Further reading:

https://moyermarineforum.com/forums/showpost.php?p=79958&postcount=4

[GregH]

Can one use the steel version? Boat launches Friday and to get them in from Moyer without paying almost $100 isn't in the cards.

I am hoping I can use the steel version then replace with the Moyer brass ones , once they get here.

No one locally has the right size in brass

[ndutton]

Sure, steel will get you by as a temporary measure.

[GregH]

Had a chat today with Ken from Moyer. Very supportive and had good suggestion. Use an expandable rubber plug to enable me to get from launch to new marina.

So I picked up one of the following from work today. It'll do until I get my Moyer order here!

[Administrator]

Nice job, Ken!

Bill